PLATE 3.10. DRONE GLOSSA

TOP LEFT. Glossa (tongue) protruding out over the retracted galeae of the maxillae. Behind the galeae and rather obscured by them are the paired labial palps. (x 63)

TOP RIGHT. Partially dissected ventral view of the relatively short glossa flanked by the four-segmented labial palps. The length of the drone glossa is less than half that of the worker. Compare with Plate 2.7. (x 65)

BOTTOM LEFT. Posterior view of the glossa, with further dissection of the mouthparts (bilateral excision of the labial palps). The short glossa hangs down between the right and left galeae, each with hairs on the medial margin. Between the galeae and partly covered by the glossa is the postmentum. The arrow points to an area further magnified in the middle right micrograph. (x 75)

MIDDLE RIGHT. Posterior view of the base of the glossa. A glimpse of the glossa is on the extreme upper left. On the right several cuticular hairs of the galea rest on the side of the postmentum (arrow in bottom left micrograph). (x 270)

BOTTOM RIGHT. Distal tip of the glossa. The expanded, spoonlike tip is called the flabellum. (x 720)